Empty Device List in the Device Manager in Windows 7 Ultimate x64

I run the full 64 bit version of Windows 7 Ultimate.I noticed some time ago that the list of devices in the Device Manager window had totally gone.I googled some troubleshooting tips including correcting the Windows Registry settings with no luck.I only have System Restore points saved from the time I found this problem onwards, so they are no use.Please anyone post troubleshooting to reveal the list of devices in the Device Manager when the Registry settings are already correct.Thank you

Keys to the Problem Empty Device List in the Device Manager in Windows 7 Ultimate x64

Possible answer to your question in either of these links: http://social.technet.microsoft.com/Forums/en/w7itprohardware/thread/5a768ef4-224e-4d49-920d-440d218cb6f4http://social.answers.microsoft.com/Forums/en-US/xphardware/thread/51a16b23-d188-4501-91c0-0a257a643e4b

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